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Finding the Fourth Proportional to 8,436.85, 11,642.85 and 4,710.85

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Solution

The fourth proportional to 8,436.85, 11,642.85 and 4,710.85 is: 6,500.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,436.85 : 11,642.85 = 4,710.85 : x
  2. Step 2: Convert to fraction form
    8,436.85/11,642.85 = 4,710.85/x
  3. Step 3: Cross multiply
    8,436.85x = 11,642.85 × 4,710.85
  4. Step 4: Simplify right side
    8,436.85x = 54,847,690.82
  5. Step 5: Solve for x
    x = 54,847,690.82/8,436.85
  6. Step 6: Final answer
    x = 6,500.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.